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I am new to Junit. I have a class with four methods. I am creating a test class with test cases. Can I have a test case that uses more than one methods of testing class or there should one test case per one method. What is good practice ?

  • Could not get my answer reading this. – want2learn Aug 3 '15 at 4:22
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    it took you how long, 8-9 minutes to study all the answers over there, along with the links to further reading referred from these answers? – gnat Aug 3 '15 at 4:30
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    @gnat: it took me 30 seconds to see that the other question is not a duplicate - it is about the contents of tests, not about their structure. – Doc Brown Aug 3 '15 at 5:08
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Can I have a test case that uses more than one method of the tested class

Obviously yes, how will you otherwise test methods which need a specific initialization before? For example

  fooCalculator = new FooCalculator(someParameters);
  fooCalculator.SetOption1(valueForOption1);
  fooCalculator.SetOption2(valueForOption2);
  result = fooCalculator.Calc(); 
  Assert.AreEqual(expectedResultForTheseOptions,result);

If, however, your question is "Can I have a test case that tests more than one method", then the answer is "you should avoid that", because that will typically result in too large tests. See this former question for a detailed explanation.

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